var http = require("http");
var fs = require('fs');
var url = require( 'url' );

var server = http.createServer(function (request, response) {
    var h_name = request.headers.host;
    
    // 发送 HTTP 头部 
    // HTTP 状态值: 200 : OK
    // 内容类型: text/plain
    response.writeHead(200, {'Content-Type': 'text/plain'});
    // 发送响应数据 "Hello World"
    response.end('Hello World\n');
}).listen(8888);

server.close();

// 终端打印如下信息
console.log('Server running at http://127.0.0.1:8888/');

